The invention relates to a fish feeder, in particular to an oreochromis sp formula feed, and a preparation method of the oreochromis sp formula feed. The oreochromis sp formula feed comprises the following components in parts by mass: 22 to 31 parts of fish meal, 7 to 15 parts of corn protein powder, 7 to 14 parts of stillage, 4 to 9 parts of bone powder, 6 to 12 parts of herba hyperici japonica, 3 to 7 parts of barbed skullcap herb, 3 to 7 parts of nutgrass galingale rhizome, 2 to 7 parts of pagoda tree flower bud, 2 to 6 parts of Indian kalimeris herb, 1 to 5 parts of platycodon grandiflorum, 1 to 4 parts of broom cypress, 3 to 8 parts of fiddlehead, 2 to 6 parts of fish oil, 1 to 4 parts of honey, 1 to 4 parts of olive oil, and 1 to 4 parts of monocalcium phosphate. The oreochromis sp formula feed has the advantages that after feeding, the coefficient of the oreochromis sp is low; in muscles of the oreochromis sp, the content of crude protein is high, the content of crude fat is low, and the content of flavor amino acid is high.